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近年来,陆续出现了利用先期盗盖或其它非法手段盖印的印文,而后再用复印机、电子打印机复印、打印文字制成的文件进行违法犯罪活动的案件,这是伪造文件的一种新方法。本文作者选择6种印文色料,分别与打印、复印文字以不同的时序交叉覆盖制成的24种实验材料,观察不同色料相反时序的交叉点处的表观特征,并采用表现检查、剥离法、荧光法、扫描电镜与能谱分析等多种方法对上述材料进行了检验,同时,对每种方法的适用性给予扼要的说明。
In recent years, one after another of cases of using illegal copyrighted paper or other illegally printed imprints, and then photocopying and printing documents made with texts from photocopiers and electronic printers for illegal and criminal activities. This is a new type of fake documents method. The author selected six kinds of imprinting materials, respectively, printed and photocopied with different timing cross-coated made of 24 kinds of experimental materials observed at different points of the intersection of the reverse timing of the apparent characteristics of color and performance inspection, Stripping method, fluorescence method, scanning electron microscopy and energy spectrum analysis of a variety of methods to test the above materials, at the same time, the applicability of each method gives a brief description.